Discharge-nozzle of former of tube-making machines.



v. BOYLE. I DISCHARGE NOZZLE 0R FORMER 0F TUBE MAKING MACHINES.

APPLICATION FILED 1130.1, 1904. v

Patented Dec. 8, 1908.

UNITED STATES PATENT oEE o VERNON: BOYLE, or PATERSON, NEW JERSEY.

mscnAneE-Nozzm on non-men or :rU E-Mrlxrnq MACHINES.

Specification of Letters Patent.

Patented Dec. e, 1908.

Application filed. December 7, 1904. Serial No. 235,817. I

keep the plastic material-in a heated condition as it escapes from" the nozzle or former. In the accompanying drawings,'Figure 1 is an end View of a nozzle or former'showing the heating apparatus adjusted thereon as in use, Fig. 2 1s a ongitudinal central section of the same, Fig. 3 1s an end view of a modified form, Fig. 4 is a longitudinal central section of the same, Fig. 5 is an end view of a second a modification, and Fig. 6 is ;a longitudinal central section of "the same.

The nozzle or former is denoted in'Figs. 1 and 2 by 1; inFigs. 3 and 4 by 2; and in Figs. 5 and 6 by 3. In each of the several figures the interior of the nozzle or former is of substantially the same size and shape and is intended to include any size or shape which may be required for gi'tin to the tube to be formed of plastic materia pressed through the nozzle the size and exterior shape reguired. On its exterior the nozzle is modied to suit the particular form of channel rin which is to be a plied thereto.

n Figs. 1 and 2 tl ie channel ring employed is formed of two parts, one part denoted by 5 being provided .in its exteri'orface with a series of annular grooves 6 which are closed on their outer faces b means of an outer annular part 7 which is lntended to slide with a close machine fit over the part 5. In the present instance three annular grooves 6 are and final The free end of the noz e 1 is turne down,

shown and adjacent grooves are connected by transverse ports so-that a heating fluid, admitted through the pipe 8 to the outer groove of the series, will travel around the outer groove; thence into the next succeeding groove, through a transverse port,and, after passing around the second groove into a succeeding groove, through a transverse port pass out throu h an exit pi e 9.

forming a seat 10 for the reception of the inner part 50f the sectional channel ring which v BOYLE, a citi-' may be sl ipped over the end of the nozzle un- 2, formed in two parts, an inner and outer,

but the inner part, denoted by 12, instead of being provided with annular grooves in its surface is provided with' a spiral groove 13 closed at its outer face by the outer part 14.

The heating fluid isadmitted to the spiral groove through a piple 15 and is dischargedthrough a pipe 16, t es'e two pipes communicating one with one end of the spiral groove and the other with the op osite end.

In the form shown in igs. 5 and b the channel "ring is'still shown as formed of two arts but there is a single annular channel 17 ormed partly in the exterior of the inner part 18 and partly in the inner face of the ex terior part 19. The annular channel 17 is interru ted at a point, in the resent instance y a screw plug 20, and t e heating fluid is admitted to the channel by an inlet pipe 21 communicating with the channel at one side of the 'plug 20 and is discharged through a pipe 22 connectin with-the channel on the o posite'side of t e plug 20.

In all of t e'forms shown the channel ring is so located with respect to the nozzle as to distribute the heating fluid around the nozzle in intimate relation thereto so as to keep A the nozzle heated to such a degree as may be desired to keep the' elastic material in its soft, pliable condition and, at the same time, the structure is such that the channel ring for directing the heating fluid around the nozzle may be removed from the nozzle whenever it is not found necessary to heat the material therein and this removal'and adjustment of the channel ring may be accomplished 'in a most expeditious and simple manner by slidin the ring off and sliding it on. It is obvious t at the channel, for example the channel 17, might be formed whollg Y the exterior'f'ace of the nozzle and close simply slipping a plain ring over it ifso desire What I claim is:- 1' 1. The combination with the nozzle. or former of a'tube making machine of a ring composed of an innersection an an outer section superposed on the inner section, the

' lprovided with an annular to surround the end of the said ring being channel and fitte nozzle or former and means for admitting a said ring. i and discharging it from the said channel.

2, The combination with the nozzle or i In testimony, that I claim the foregoing former of a tube making machine, of e two- I as my invention, 1 have signed my name in 5 part ring composed of outer and inner secresence of two Witnesses, this 17th day of 15 tions, the inner part being fitted to slide on ii Iovember 1904.

heating fluid into and discharging it from. the g and means for admitting a heating fluid to and off the end of the nozzle and having a v VERNON BOYLE. channel in its outer face and the outer part Witnesses: of the rin being fitted to surround the inner FREDK. HAYNES,

10 part and orm the outer wall of the-channel HENRY THIEME. 

